This helps document that the HeapCellTypes are immutable once they are instantiated, and that SubSpaces won't be modifying them. Also remove the const on CellAttributes return values since it is not needed nor meaningful.
<rdar://problem/85573277>
Created attachment 444756 [details] [fast-cq] proposed patch.
Comment on attachment 444756 [details] [fast-cq] proposed patch. r=me
Comment on attachment 444756 [details] [fast-cq] proposed patch. Thanks for the review.
Committed r286042 (244430@main): <https://commits.webkit.org/244430@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 444756 [details].